Stella de Oro is always the first daylily to bloom in my zone 6b garden, adding bright lights wherever it grows. It blooms and reblooms (after a rest) from early to late in the season, year after year, without special care, e.g., watering. I live on top of a windy, drought-prone hill where water must be rationed, so I don't water Stella de Oro. I haven't done much fertilizing or dividing because I don't have places for the divisions.
The foliage is always very nice until after the first bloom cycle. Then it tends to turn brown and thin out. Subsequent scapes are shorter, less plentiful and less robust, but they do continue intermittently all season.
I use Stella de Oro to edge gardens, prevent erosion on slopes, and fill empty spaces in the garden that need a bit of brightness.